QUANTIFYING SOCIAL CAPITAL

For each of a group of nodes including a node corresponding to a first member and a plurality of nodes corresponding to members with which the first member is directly connected in a social graph, a plurality of reputation scores may be calculated for a node in the social graph, and the plurality of reputation scores for the node may be averaged into an importance score for the node. A keyness score for each of the plurality of nodes corresponding to members with which the first member is directly connected in the social graph can be calculated, the keyness score for each of the plurality of nodes being based on a connection strength for a connection between the node and the node corresponding to the first member and based on the importance score for the node. The keyness scores may be selected, averaged, and saved as a social capital score.